Coordination cage-based emulsifiers: templated formation of metal oxide microcapsules monitored by in situ LC-TEM

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dc.contributor.authorSaha, Subhadeep
dc.contributor.authorChen, Yen-Ting
dc.contributor.authorGanta, Sudhakar
dc.contributor.authorGilles, Markus
dc.contributor.authorHolzapfel, Björn
dc.contributor.authorLill, Pascal
dc.contributor.authorRehage, Heinz
dc.contributor.authorGatsogiannis, Christos
dc.contributor.authorClever, Guido H.
dc.date.accessioned2022-03-04T13:40:08Z
dc.date.available2022-03-04T13:40:08Z
dc.date.issued2021-11-26
dc.description.abstractMetallo-supramolecular self-assembly has yielded a plethora of discrete nanosystems, many of which show competence in capturing guests and catalyzing chemical reactions. However, the potential of low-molecular bottom-up self-assemblies in the development of structured inorganic materials has rarely been methodically explored so far. Herein, we present a new type of metallo-supramolecular surfactant with the ability to stabilize non-aqueous emulsions for a significant period. The molecular design of the surfactant is based on a heteroleptic coordination cage (CGA-3; CGA=Cage-based Gemini Amphiphile), assembled from two pairs of organic building blocks, grouped around two Pd(II) cations. Shape-complementarity between the differently functionalized components generates discrete amphiphiles with a tailor-made polarity profile, able to stabilize non-aqueous emulsions, such as hexadecane-in-DMSO. These emulsions were used as a medium for the synthesis of spherical metal oxide microcapsules (titanium oxide, zirconium oxide, and niobium oxide) from soluble, water-sensitive alkoxide precursors by allowing a controlled dosage of water to the liquid-liquid phase boundary. Synthesized materials were analyzed by a combination of electron microscopic techniques. In situ liquid cell transmission electron microscopy (LC-TEM) was utilized for the first time to visualize the dynamics of the emulsion-templated formation of hollow inorganic titanium oxide and zirconium oxide microspheres.en
dc.identifier.urihttp://hdl.handle.net/2003/40763
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-22620
dc.language.isoende
dc.relation.ispartofseriesChemistry - a European journal;28(5)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCoordination cagesen
dc.subjectEmulsionsen
dc.subjectMetal oxidesen
dc.subjectSelf-assemblyen
dc.subjectTransmission electron microscopyen
dc.subject.ddc540
dc.titleCoordination cage-based emulsifiers: templated formation of metal oxide microcapsules monitored by in situ LC-TEMen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.openaire.projectidentifierinfo:eu-repo/grantAgreement/EC/H2020/683083/EU/Reactivity and Assembly of Multifunctional, Stimuli-responsive Encapsulation Structures/RAMSESde
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationS. Saha, Y.-T. Chen, S. Ganta, M. Gilles, B. Holzapfel, P. Lill, H. Rehage, C. Gatsogiannis, G. H. Clever, Chem. Eur. J. 2022, 28, e202103406.de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/chem.202103406de

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